at work we have an sparc ultra 10.
We wanted to install gentoo, but the question is how to partitind the disk
I can get access to the -dev-hda and aprtioned them like on the intel-platform and went to the whole installation process like on the I-platform.
after reboot i get the error magic labe id missing

So i thing i have to use an sunlabel partion ?
but this partition scheme is starneg to me

like whole disk etc.
and then not having a separeat boot partion.
Any lights out there to help ?

You will need a sun disklabel on the drive in question (can be created by fdisk option s (be warned using this will destroy existing paritions)). Openboot needs this label to boot the drive. As for the whole disk parition, I've had luck booting with and without it. Below I have included examples of fdisk layouts with and without the whole disk parition.